Numerical solution vs Analytical solution

Mauricio Fabian Duque Daza wrote: Hi community, I have a system equations 8x8, which I find its analytical solution with a approximation. I want solved numerically this system 8x8, but without this approximation. But I compare the analytical solution to numerical with approximation, and they aren't same. I used the command linearsolve this command has a error?, How many? Thank you for your help and colaboration mfduqued

Your command is requiring a linear method for solution, some problems will not be solved using linear methods. Try a solve block; if "Find" does not produce a solution, try "Minerr."

Exactly what are you comparing to what? It's not at all clear in your worksheet.

>I have a system equations 8x8, which I find its analytical solution with a approximation<

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I won't trust that for a dime !